A patriarch is read as established authority, tradition and the head of a household. Dream books link the figure to rules you were raised with and how you feel about them now.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.